Using an ovulation kit (or opk) to predict when you are ovulating will improve your chances of getting pregnant. For many women charting or other methods of ovulation prediction are too confusing. Ovulation prediction kits work by reading LH surges prior to ovulation. They are relatively easy to use and are generally accurate for predicting ovulation. Fertility monitors, such as the Clear Blue Easy monitor, are also a worthwhile investment if you would like to get pregnant faster. Fertility monitors are similar to ovulation prediction kits in that they read changes in LH but they also read changes in other hormones and don't require any guesswork for couples. They are easy to use and will tell you when the best time to get pregnant is.